KH 15D

KH 15D

KH 15D in NGC 2264
Credit: ESO
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Monoceros
Right ascension 6h 41m 10.31s[1]
Declination +9° 28′ 33.2″[1]
Apparent magnitude (V) 15.5 - 21.5[2]
Characteristics
A
Evolutionary stage Pre-main-sequence
Spectral type K7[3]
Apparent magnitude (V) 16.039±0.003[4]
Apparent magnitude (R) 15.257±0.005[4]
Apparent magnitude (I) 14.489±0.001[4]
Apparent magnitude (J) 13.504±0.017[4]
Apparent magnitude (H) 12.825±0.015[4]
Apparent magnitude (K) 12.541±0.014[4]
Variable type T Tauri star
B
Evolutionary stage Pre-main-sequence
Spectral type K1±0.5[5]
Apparent magnitude (V) 15.509±0.009[4]
Apparent magnitude (R) 14.776±0.008[4]
Apparent magnitude (I) 14.198±0.009[4]
Apparent magnitude (J) 13.285±0.010[4]
Apparent magnitude (H) 12.570±0.013[4]
Apparent magnitude (K) 12.421±0.022[4]
Variable type T Tauri star
Astrometry
A
Parallax (π)1.27 ± 0.08 mas[6][7]
Distance773+50.0
−43.6[8] pc
Absolute magnitude (MV)6.756±0.055[4]
B
Parallax (π)1.27 ± 0.08 mas[6][7]
Distance773+50.0
−43.6[8] pc
Absolute magnitude (MV)6.226±0.056[4]
Orbit
PrimaryB
CompanionA
Period (P)48.37 days[3]
Semi-major axis (a)0.25 AU[9]
Eccentricity (e)0.574±0.017[9]
Inclination (i)92.5±2.5[9]°
Details
A
Mass0.715±0.005[4] M☉
Radius1.41±0.05[4] R☉
Temperature3970±40[4] K
B
Mass0.74+0.09
−0.04[4] M☉
Radius1.52±0.16[4] R☉
Temperature4140±155[4] K
Other designations
Database references
SIMBADdata

KH 15D (V582 Monocerotis), described as a winking star because of its unusual dips in brightness,[11] is a binary T Tauri star system embedded in a circumbinary disk. It is a member of the young open cluster NGC 2264, located about 2,500 light-years (770 pc) from the Sun in the constellation of Monoceros.

  1. ^ a b Cite error: The named reference dahm was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference vsx was invoked but never defined (see the help page).
  3. ^ a b Hamilton, Catrina M.; et al. (2001). "Eclipses by a Circumstellar Dust Feature in the Pre-main-Sequence Star KH 15D". The Astronomical Journal. 554 (2): L201–L204. arXiv:astro-ph/0105412. Bibcode:2001ApJ...554L.201H. doi:10.1086/321707. S2CID 17956137.
  4. ^ a b c d e f g h i j k l m n o p q r s t Aronow, Rachel A.; et al. (2018). "Optical and Radio Observations of the T Tauri Binary KH 15D (V582 Mon): Stellar Properties, Disk Mass Limit, and Discovery of a CO Outflow". The Astronomical Journal. 155 (1): 47. arXiv:1711.11434. Bibcode:2018AJ....155...47A. doi:10.3847/1538-3881/aa9ed7. S2CID 59444726.
  5. ^ Capelo, Holly L.; et al. (2012). "Locating the Trailing Edge of the Circumbinary Ring in the KH 15D System". The Astrophysical Journal Letters. 757 (1): L18. arXiv:1208.5497. Bibcode:2012ApJ...757L..18C. doi:10.1088/2041-8205/757/1/L18. S2CID 51004072.
  6. ^ a b Cite error: The named reference gaiaref1 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference gaiaref2 was invoked but never defined (see the help page).
  8. ^ a b Bailer-Jones, C. A. L.; et al. (April 2018). "Estimating distances from parallaxes IV: Distances to 1.33 billion stars in Gaia Data Release 2". The Astronomical Journal. 156 (2): 58. arXiv:1804.10121. Bibcode:2018AJ....156...58B. doi:10.3847/1538-3881/aacb21. S2CID 119289017.
  9. ^ a b c Cite error: The named reference winn2006 was invoked but never defined (see the help page).
  10. ^ "V582 Mon". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 25 June 2018. — some of the data is located under "Measurements".
  11. ^ Cite error: The named reference wilford was invoked but never defined (see the help page).